Finding the Third Proportional to 187,722 and 402,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,722 : 402,781.50 = 402,781.50 : x
2. Step 2: Convert to fraction form
   187,722/402,781.50 = 402,781.50/x
3. Step 3: Cross multiply
   187,722x = 402,781.50 × 402,781.50
4. Step 4: Simplify right side
   187,722x = 162,232,936,742.25
5. Step 5: Solve for x
   x = 162,232,936,742.25/187,722
6. Step 6: Final answer
   x = 864,219.09